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Mercruiser manifold GM 305 350 V8 engine

GLM aftermarket parts for 305, 350, 377 V8 GM small block marine engine years 1982 and up

  • GLM'S Maximum manifold features GLM aftermarket made from "Lost Foam" casting
  • More reliable than other types of cast-iron technology.

Tech support Exploded view Mercruiser drawings

Mercruiser drawing GM 305 350 CID V8 1983 up

Mercruiser drawing GM 305 350 CID V8 1983 up

51230

51230

Item 1
P/N 51230
OEM 860246A10 Exhaust manifold iron casting assembly includes item number 1, 2, 3, 8,9,10 and 13 P/N 51230 $172.29

21892

21892

Item 2
P/N 21892
OEM 22-41622 Plug 3/4-14 steel *2 units $4.89

21896

21896

Item 2
P/N 21896
Plug 3/4-14 brass $7.89

31100 Gaskets

31100 Gaskets

Item 3 - P/N 31100
Click here for all manifold gaskets for all 4 cylinder, 6 cylinder and V8 motors. OEM 27-33395 Edit Text Gasket *2 units $11.89

13990 Drain plug

13990 Drain plug

Item 4
P/N 13990
OEM 22-806926A1 Hose fitting with drain plug kit Contents ref 8,9,10 $8.89

30240

30240

Item 5
P/N 30240
OEM 27-863724 Gasket *2 units Raw water cooling $15.89

30220

30220

Item 6
P/N 30220
OEM 27-860231 Gasket *2 units Fresh water cooling $16.89

32080

32080

Item 7
P/N 32080
OEM 27-863726 Gasket *2 units $13.89

13991

13991

Item 8
P/N 13991
OEM 22-806926 90 Degree hose fitting $8.89

13992

13992

Item 9
P/N 13992
OEM 22-806608A1 Drain plug kit *5 units Contents Ref.10 $15.89

 

Item 10
P/N 80140
OEM 25-45253 O Ring *5 units $4.89

 

Item 11
P/N 51110
OEM 98504A3 Exhaust elbow *iron casting 3" 15 Degree $133.89

 

 OEM 807988A2 Exhaust elbow *iron casting 4" 7 Degree $157.89

22391

22391

Item 13
P/N 22391
OEM 16-49545 Stud *4 units - steel $8.89

50300 Spacer 807467A3

50300 Spacer 807467A3

Item 14
P/N 50300
OEM 807467A3 Spacer 3" iron casting $101.89

50600

50600

Item 15
P/N 50600
OEM 807477A2 Spacer 6" iron casting $111.89

22462

22462

Item 16A
P/N 22474
OEM 16-11375 Stud *4 units 3/8 x 9 1/2 use with 4" elbow $29.89

22481

22481

Item 16B
P/N 22481
OEM 16-97520 Stud *4 units 3/8 x 5 use with 3" elbow $17.89

 

Item 17
P/N 21493
OEM 13-35048 Lockwasher *10 units $9.89

21248 lock nuts

21248 lock nuts

Item 18
P/N 21248
OEM 11-46335 Flange serrated nut *4 units $4.89

21893

21893

Item 19
P/N 21898
OEM 22-32802-2 Plug *2 units $4.89

 

Item 20
P/N 22381
OEM 10-43749 Screw steel zinc plated $4.89

22379

22379

Item 21
P/N 22379
OEM 22-73379 Plug *5 units $17.89

 

Item 22
P/N 21745
OEM 10-53728 Screw *2 units $4.89

21899

21899

Item 23
P/N 21899
Plug $4.89

22355

22355

Item 24
P/N 22355
OEM 10-12244 Screw *4 units $4.89